Mathematical Models of Modern Power Save Mechanisms in Wi-Fi Networks

IF 0.4 4区计算机科学 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC Journal of Communications Technology and Electronics Pub Date : 2024-03-07 DOI:10.1134/s106422692314005x

D. V. Bankov, A. I. Lyakhov, E. A. Stepanova, E. M. Khorov

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Abstract—

The Wi-Fi standard describes a number of power save mechanisms, the main idea of which is to periodically turn off the radio to save energy on channel listening. In modern Wi-Fi networks, such mechanisms include Target Wake Time (TWT) and Wake-Up Radio (WUR). Despite the fundamental differences between these mechanisms, they both use the activity period scheduling alternating with long intervals of turning off the main radio. Turning off the main radio not only saves energy, but also causes the loss of synchronization between the clocks of the power-saving stations with the access point clock because of the clock drift effect, which can negatively affect the efficiency of these mechanisms. In this paper, mathematical models of frame transmission from an access point to power-saving stations using TWT and WUR have been developed. The models consider the clock drift effect and allow us to evaluate the efficiency of the considered mechanisms in terms of average power consumption and average frame delivery delay.

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Wi-Fi 网络中现代省电机制的数学模型

摘要--Wi-Fi 标准描述了许多省电机制，其主要思想是定期关闭无线电以节省信道监听能源。在现代 Wi-Fi 网络中，这类机制包括目标唤醒时间（TWT）和唤醒无线电（WUR）。尽管这些机制之间存在本质区别，但它们都采用了活动期调度与长时间关闭主无线电交替的方式。关闭主无线电不仅可以节能，但由于时钟漂移效应，节电站的时钟会与接入点时钟失去同步，从而对这些机制的效率产生负面影响。本文建立了使用 TWT 和 WUR 从接入点向节电站传输帧的数学模型。这些模型考虑了时钟漂移效应，使我们能够从平均功耗和平均帧传输延迟的角度来评估所考虑的机制的效率。

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来源期刊

Journal of Communications Technology and Electronics 工程技术-电信学

CiteScore

1.00

自引率

20.00%

发文量

170

审稿时长

10.5 months

期刊介绍： Journal of Communications Technology and Electronics is a journal that publishes articles on a broad spectrum of theoretical, fundamental, and applied issues of radio engineering, communication, and electron physics. It publishes original articles from the leading scientific and research centers. The journal covers all essential branches of electromagnetics, wave propagation theory, signal processing, transmission lines, telecommunications, physics of semiconductors, and physical processes in electron devices, as well as applications in biology, medicine, microelectronics, nanoelectronics, electron and ion emission, etc.